Shoo-fly for printing-presses.



M. A. oaoncoua.

SHOO-FLY FOR PRINTiNG PRESSES. APPLICATION FILEYD JAN. 6. I916.

Patented Feb.20',1917.-

rlllimml [1,216,668.11 v-Anplicationfiled January 6, 19 131 Seria1"l \To'."7 ,668. 5

vgi l M CH E N WFDROIToQUE; 0 DEnriios'o Id Q U and to the characters of referencemarkedj thereon, which form apart of this specifica tion ,5=' 5 v ';l

. ,Thisinvention relates to printing presses,

and particularlyeto a shoofly attachment therefor, which is 'carri'edby theimpression cylinder and is automatically operable to liftthe forwarded'ge of a sheet from the cylinder "when released by;;-thef grippermeans, thus facilitating a passage of the sheet from the cylinder ontothe sheet delivery means after the printing operation, 7

The object of my invention is. the provision ofa shoo-fiy mechanism of the character described, which is operatively connected toand is actuated by the {gripper means to lift the forward edge ofa sheetiwhen'the gripper means is operated; to release the I. sheet.

a The invention is fully .describedin the following specification," and while, inf-its broader aspect, it is capableof embodiment in numerous forms, a preferred embodiment thereof'is illustrated in the, accompanying drawing,-'in yvhich,-'+* v a p Figure 1 is a-perspective view of the impression cylinder of aprinting press with my invention associated-therewith, :and Figs.

' 2 and 3 are fragmentary end elevations thereof, *with the gripper means and shoo-fly means'in. normal positionin the former, and" moved iromsuch position inqthe latter.

Referring to the dra'wings,fl designates the platen or impression cylinder, 2 the .feed table, and 3 the sheet delivery means ofa printing press, said: delivery means having a set lo'ftfingers 3 projectingfrom the receiving'endth'ereo'f adjacent to and'substantially in tangential relation to. the top-portionof the cylinder in positiomforja sheet;

topass; thereover from the" cylinder when released by the gripper-means, as well understood .in'the art; v

i .The gripper-fingers A,ar eg carriedgby a r fic t nr 'iii si i tpsm taaset. 20,1911

be described.

shaft 5 whi'ch is "mountediiior rockinglmoveat predetermined points ina revolution of the cyl nder; Themechanism employed for 'ments in the cylinderends, the shaft being f rocked to alternatelygrip and release a sheet king thegripper shaft is'not shown asit, Il';1t.sel;f, forms'jno partof the present invenv tion and the different. mechanisms employed on; d fferent types and styles of presses'iare well understood by'per'sons skilled in the tart.

ner ends by-a rocker -shaft 'l', that is journalediatitsends {intherespective cylinder 1 3 'The l ha sme designated; '7 are arranged in alternati g l ti n to" the V gripper5fingers 4: and carried at their-in- '70, i

endsx Anarm"8, is.carried by" the shaft 7" atone end thereo'fandfhas a rod 9 pivotally 1 I I 7 5 thr h guide t d n c the dj e ,1

extending from its free end; and projecting :cylinderend. A coiled compression-spring V '11' is mounted on the rod' 9 withionje end' thrustfagainst{the stud 10 and itsi'other end thrust against a pin '12 on the rod,j,said pr nge ng w o k f h h in a direction to retain the free ends of the shoofly. fingersjagainstthe edge; or portion; of the cylinder periphery towhich the forward edge of .a-sheet is gripped by the gripperfingers 4. When a sheet is gripped to the cylinder the free ends of the shooefly' fingers 1 ;.V Q i are disp'osed below orat theinner' side of 2 it the grippededge of the sheet, i-whereby an outward movement of ,the shoe-fly fingers will effect lifting or outward-throwing; of

Themeans employed torjiniparting rock ;'7

V and simultaneous with the initial rocking I movements of thegripper-shaft :5, where.

ing movements to'the shoo-fiyv shafti from the-sheet edge from the cylinder, as shown 1 by theforwar d edg iof a sheeti .m or I moved, .outwardfromlthe cylinder, as it is released by the, l gripper-fingers, -will vnew e g pp r-s 1 ts rr vi e r ne 1 end zthereofiwinthe present instance,.w ith a-Efcoll renl-argernent 13, which is fij-Xed" I thereto and 1 is provided on its outer side with respect to the cylinder with a radially" projecting, toothflor spur lekfA rocker arm '15 isfixedtd the; shoo-fly shatt 7, in-trans verse .alinem'ent with the collar 13,; and vhas a 'tripefinger 16 pivotally projecting: from its-cuter'end in Substantially longitudinal Y relation to a circle concentric to theaigis the gripper-shaft e and ada ted to yieldingly bear inward against the outer end of the tooth or spur 14 when the-=gripper-fingers'4 are in sheet grippingposition. The

trip-finger 16 is provided at the rear of its free end with a shoulder 17 ,"which is properly positioned for the tooth or spur 14' to have side thrust contact therewith when the shaft 5 is rocked to move the gripperfingers outward to release a sheet and to impart a simultaneous rocking movement to the shoo-fiy shaft 7 through said tripfinger and thearm-15. When the tooth or spur 14 has turned a predetermined distance it will have withdrawn from engagement with the shoulder 17 thereby permittingthe shoo-fiy shaft and attached parts to return to, normal position under the influence ofthe spring 11. A spring-finger 18 is carried by the arm 15 and has'its free end bearing inward against the outer side of the trip-finger 16 to yieldingly hold its free end in inward bearing engagement with the collar 13 or its tooth 14. o

It is evident that an initial outward rocking movement of the gripper-shaft 5 from sheet gripping position will'efi'ect a simultaneous raising of both the gripper and shoo-fly fingers to cause a releasing of the sheet edge by one and an outward moving of the released sheet edge from the cylinder periphery by the other, and that when the V per-fingers to release the engaged sheet and that simultaneously with the initial releasing movement of the gripper-fingers the shoo-fiy means will be operated to raise the forward edge of the sheet, which is designate'dv a in Fig. 3, to insure the passage of such sheet over the delivery fingers 3.

When the edge of the sheet has been raised a predetermined distance by the shoo-fly fingers, the trip-finger 16 is automatically released from engagement with the tooth or spur 14 on the gripper-shaft 5, thus permitting the shoo-fiy parts to return to their normal position. The turning of the gripper-shaft 5 onits axis of rotation is continued for a predetermined distance after the shoo-fly means has been released from engagement therewith, as is well understood in the art. 7

I It is apparent that I have provided a shoo-fly operating mechanism which is sim ple and inexpensive in its construction, and is connected to and operated directly by the gripper-means, so that the movements of the shoo-fiy means are positive and properly timed with the sheet releasing movements of the" gripper means.

I wish it understood that'my invention is not limited to any specific construction, arrangement or form of the parts, as it is capable of numerous modifications without departing from the spirit of the claims.

7 Having thusdescribedmy invention, what I claim-as new, and desire to secure by Letters Patent, is,

1 In combination, sheet gripping means, shoo-fly means, andfmeans having connection with and operated by sheet releasing movements of said grippingmeans to impart predetermined movements to said shoofiy means.

2. The combination withthe rocker-shaft of a sheet gripping mechanism, of shoo-fiy means having a rocker-shaft and. shoo-fiy fingers projecting therefrom, and means having connection with and operated. by initial sheet releasing rocker movements of said first rocker-shaft to impart predetermined rocking movements to said shoo-fly rockershaft. 7 v v 8. The combination with sheet-gripper means of a printing press, said means having a rocker part, of 'shoo-fly means having a shoo-fly finger rocker-shaft, an arm projecting from said rocker-shaft, and a tripfinger connecting said arm and rocker part and operable to impart predetermined rocking movements to said rocker-shaft when said rocker part is rocked. I

4. In a printingpress, an impression'cylinder, a pair of rocker-shafts carried by said cylinder, one having sheet gripping fingers and the other shoe-fly fingers projecting therefrom, and means connecting said shafts and operable to impart predetermined rocking movements to one when the other has predetermined rocking movements.

5. In combination, a I cylinder, a sheetgripper mechanism carried thereby and having a rocker-shaft, shoo-fly means carried by the cylinder and having a rocker-shaft, and 7 means connecting the rocker-shafts of said mechanism and shoo-fly means and automatically operable to communicate predetermined rocking movements to the Shoo-fly means when the gripper mechanism shaft is rocked and to releasethe connection between said rocker-shafts when the rocker-shaft of the shoo-fly'means hasbeen rocked a predetermined extent. I I a r 6. In "combination, a cylinder, a sheetgripper mechanism carried thereby and having a rocker-shaft, a shoo-fly means carried bysaid cylinder and having a rocker-shaft,-

means operable to normally maintain the shoe-fly means in one position of its movement with respect to the cylinder, and means connecting the rocker-shafts of said gripper mechanism and shoo-fly means and operable to move the shoo-fly means a predetermined distance from normal position when the rocker-shaft of said mechanism has sheet releasing movements imparted thereto and then to release said, shoo-fly means to permit it to return to normal position.

7. The combination with the cylinder of a printing press, and sheet-gripper means carried thereby and having a rocker-shaft,-

of a tooth projecting from said rocker-shaft,

a shoo-fly means carried by said cylinder and including a rocker-shaft and shoo-fly acting on the shoo-fly means tonormally retain it in one position of its movement with respect to the'cylinder, an arm projecting from the shoo-fiy shaft and a spring fingers projecting from said shaft, means pressed finger pivotally projecting from said arm and having a part for coacting with said tooth whereby an initial rocking of the gripper-shaft from sheet-gripping position will effect a rocking of the shoo-fly means from normal position and then release. it.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D, 0. 

